Mail Problem

[mike2277]

Hi,
Hoping for some help on a mail problem.

Running Windows 2000 server, MS SQL Server and ColdFusion MX.

I have an application that allows teachers to create websites for their classes. They can enroll groups of students and each student has an email address. They can use a form then to email all of their students in the class.

I just discovered that I can go to CFusionMX > Mail > Undeliv to check to see if any emails have been undelivered. I was horrified to see that a lot of messages were never sent.

I'm relaying through an exchange server and all settings seem fine.

I'm looking at all of the unsent mail to find a pattern but can't seem to come up with one.

For example, in one class of 15 students there were 3 emails not sent. I emailed these 3 people via my client email program - Eudora - and their email addresses are valid, they replied right away.

I check mail log and find a message like this for each undelivered:

Connection refused....could not connect to smtp host etc. nested exception is: java.net.connect.exception

I have tested this many times on my machine and get replicate the issue. I even use all external email addresses to see if that's the issue. I have logged onto other external servers that are running this app and they've got some unsent mail as well.

90% of the time the mail works fine. The other 10% only some of the users in the group get the mail.

Thanks in advance for any ideas.


Mike

 

[TruthInSatire]

how are you sending the mail?

i've had issues where i had multiple addresses in the "to" paramater and it didn't send some. now i send all my email individually inside a cfloop and i don't have a problem.

are all the mail's sent at one time? if you have each mail being sent individually after the teacher fills out the form is there a valid email in the FROM paramater? (it wont work without one)

A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.
-Douglas Adams (1952-2001)

 

[mike2277]

Thanks for the ideas.

No, I'm not using cfloop to send the emails. I'll try that and see if that helps.

Also, I have tested with both valid and invalid addresses in the from field and that doesn't seem to be able to replicate it.

Thanks!